tunning vs boost psi

[rstchris]

Before I started running E85 I was running 25psi one the E3 @17* peak. 1 ct. knock on Texaco 91. Also on an ebay small fmic.

 

[Black_Bullet]

He runs E85.

I currently run a flat 28psi bottom to top. My car doesn't feel like it has much power with the boost any lower; I only have like 118psi of compression in #2, so that's probably part of the reason.

Was the compression like that with the numbers in your avatar?
Ideally with ethanol, Id run as high as 11.1 compression on a e316g setup.
Sounds crazy but thats were the powers at

 

[JayRolla]

Was the compression like that with the numbers in your avatar?
Ideally with ethanol, Id run as high as 11.1 compression on a e316g setup.
Sounds crazy but thats were the powers at

Jack here is going to run a very high compression motor with either customized pistons he will modify or some he has made for him. Either way its going to be some crazy high compression numbers. I cant wait to see it built.

 

[clockworktoy]

Im running 26psi on crappy california 91 octane, the car doesn't feel a whole lot different now compared to the 23-24 psi i ran before but the dyno showed it made some extra power. It is hard getting high boost on crappy pump gas but you find a sweet spot where it will take all the boost you throw at it. This is all done with proper timing and a big ebay fmic. But ill definitely will be moving onto meth so i can make more torque and have a bit more fun on the streets.

 

[Black_Bullet]

Jack here is going to run a very high compression motor with either customized pistons he will modify or some he has made for him. Either way its going to be some crazy high compression numbers. I cant wait to see it built.

I have a friend that went all out, 2.3 stroker, 12:1 compression fully built everything. Ever since going 12:1 coming from 10:1 he says the car feels super charged

 

[JayRolla]

Yea I'm talking crazy numbers like over 13.5:1 maybe in the 14's.

 

[blizz99]

High boost is completly capable on turbos on straight 93, it just comes down to making sure everything is right, and knowing what your doing with the tune. Im running 34psi on straight 93 pump gas now. No meth or anything you can think of. Who says ebay intercoolers cant rock .

+1 on that!

Oh ofcourse. Hot air, efficency, timing play huge rolls. Cylinder pressure being one of the key factors in it all. Every car is different, but with some knowlege big power is possible on 93 octane.

I like seeing guys pushing the limits. Right now Im tuning a buddies car, dsmlink, 780s, evo 3 16g, delta 272s, built motor. Trying to see what kind of numbers we can get out of it on straight 93 octane.

haha that's my car! right now it's tuned to a healthy 25psi's

 

[1fastlaser]

+1 on that!


haha that's my car! right now it's tuned to a healthy 25psi's

44lbs a minute on straight 93 octane is pretty good im pumped. Hopefully the track works out tomorrow night, I wanna see some 11 second passes.